发明申请
US20090310658A1 Systems and Methods for Positioning and Messaging of Reserved Tones for Peak-to-Average Ratio (PAR) Reduction in DSL Systems
有权
DSL系统中峰值平均比(PAR)降低的保留音的定位和消息传递系统和方法
- 专利标题: Systems and Methods for Positioning and Messaging of Reserved Tones for Peak-to-Average Ratio (PAR) Reduction in DSL Systems
- 专利标题(中): DSL系统中峰值平均比(PAR)降低的保留音的定位和消息传递系统和方法
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申请号: US12138657申请日: 2008-06-13
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公开(公告)号: US20090310658A1公开(公告)日: 2009-12-17
- 发明人: Rahul Garg , Patrick Duvaut , Amitkumar Mahadevan , Harish Jethanandani
- 申请人: Rahul Garg , Patrick Duvaut , Amitkumar Mahadevan , Harish Jethanandani
- 申请人地址: US CA Newport Beach
- 专利权人: CONEXANT SYSTEMS, INC.
- 当前专利权人: CONEXANT SYSTEMS, INC.
- 当前专利权人地址: US CA Newport Beach
- 主分类号: H04B1/38
- IPC分类号: H04B1/38
摘要:
Systems and methods for reducing the peak-to-average ratio (PAR) at the transmitter can reduce the dynamic range required in various analog components. PAR can be reduced by applying a time-domain compensation signal which reduces the magnitude of peaks in the time-domain signal prior to transmission where the time-domain compensation signals use tones that are reserved for the purpose of reducing the PAR. The reservation of these reserved tones for PAR can be implemented by altering the typical startup procedures in a digital subscriber line (xDSL) system. The use of the reserved tones to reduce the PAR can be implemented using a low complexity algorithm or using an adaptive technique.
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